<template>
  <view>
    <view class="goods-list">
        <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
     <my-goods :goods="goods"></my-goods>
        </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        queryObj:{
          query:'',
          cid:'',
          pagenum:1,
          pagesize:20
        },
        goodsList:[], // 接收返回的数据
        total:0,
        isloading:false // 节流阀
      }
    },
    onLoad(options) {
      this.queryObj.query=options.query || ''
      this.queryObj.cid=options.cid
      this.getGoodsList()
    },  
    methods: {   
      // 获取商品列表数据的方法
        async getGoodsList(cb){
          this.isloading=true  // 打开节流阀
         const {data:res}=await uni.$http.get('/goods/search',this.queryObj)
         this.isloading=false // 关闭节流阀
         cb && db()
         this.goodsList=[...this.goodsList,...res.message.goods]
         this.total=res.message.total
        },
        // 跳转到详情页
        gotoDetail(item){
          console.log('2123')
          // 非tabbar页面使用navigateTo方法
          uni.navigateTo({
            url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
          })
        }
    },
    // 上拉加载数据方法
    onReachBottom(){
      // 判断数据是否加载完毕
      if(this.queryObj.pagenum*this.queryObj.pagesize>=this.total){
        return uni.$showMsg('数据加载完毕')
      }
      if(this.isloading) return // 判断节流阀是否打开
      // 页码值自增加一
      this.queryObj.pagenum++
      this.getGoodsList()
    },
    // 下拉刷新方法
    onPullDownRefresh() {
      this.queryObj.pagenum=1
      this.total=0
      this.isloading=false
      this.goodsList=[]
      this.getGoodsList(()=>uni.stopPullDownRefresh())
    }
  }
</script>

<style lang="scss">

</style>
